646412

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 1260672

約数和(自身を除く): 614260

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 401, 403, 802, 806, 1604, 1612, 5213, 10426, 12431, 20852, 24862, 49724, 161603, 323206, 646412]

約数ペア:

[(1, 646412), (2, 323206), (4, 161603), (13, 49724), (26, 24862), (31, 20852), (52, 12431), (62, 10426), (124, 5213), (401, 1612), (403, 1604), (802, 806)]